You may be trying to access this site from a secured browser on the server. Please enable scripts and reload this page.

Enter your Email address:

Wolters Kluwer Health may email you for journal alerts and information, but is committed
to maintaining your privacy and will not share your personal information without
your express consent. For more information, please refer to our Privacy Policy.

Physicochemical and Spectroscopic Characteristics of Charred Plant Fragments in Japanese Volcanic Ash Soils

Abstract

Abstract: We analyzed the physicochemical and spectroscopic properties of three charred plant fragments (CPF) that were isolated from three volcanic ash soils in Japan. Values of δ13C showed that the CPF originated from C3 and C4 plants. The contribution ratio of C4 plants to the CPF was much higher in Soils 1 and 3 than in Soil 2. Values of δ15N of the CPF were higher in Soil 3 isolated from the deeper soil horizons. Light reflectance values suggested that part of the CPF experienced combustion temperatures higher than 400°C in Soil 2 and less than 400°C in the other soils, respectively. Atomic [H]/[C] and [O]/[C] ratios suggested that the CPF were subjected to weathering (oxidative degradation and hydrolysis) in soil for a long period after burning. The degree of weathering was considered to be larger in Soils 1 and 3. Spectra of 13C-NMR of the CPF, except the area of alkyl-C, were similar. Infrared (IR) spectra of three CPF, except aliphatic C-H stretching, were also similar to each other. The X-ray diffraction patterns of the CPF in Soil 2 clearly revealed the presence of graphite-like structure. From these findings, it was assumed that the physicochemical and spectroscopic characteristics of the CPF were strongly influenced by the type of burnt vegetation.

Enter and submit the email address you registered with. An email with instructions to reset your password will be sent to that address.

Email:

Password Sent

Link to reset your password has been sent to specified email address.

Remember me

What does "Remember me" mean?
By checking this box, you'll stay logged in until you logout. You'll get easier access to your articles, collections,
media, and all your other content, even if you close your browser or shut down your
computer.

To protect your most sensitive data and activities (like changing your password),
we'll ask you to re-enter your password when you access these services.

What if I'm on a computer that I share with others?
If you're using a public computer or you share this computer with others, we recommend
that you uncheck the "Remember me" box.